The week after Baker Street was the busiest seven days of the post-apocalypse.

Ethan threw himself into dungeon runs with the single-minded focus of someone who'd just learned that a cosmic executioner was studying his every move. The Arbiter had seen him. Cataloged him. And somewhere in the System's architecture, his correction probability was climbing toward the point of no return.

Level 8 wasn't enough. Not for what was coming.

Jax had moved his operation into the Baker Street community center — a proper command room this time, with six monitors, a power supply from Gerald's jury-rigged solar panels, and a dedicated secure channel to a growing network of Safe Zones that had received his broadcast.

"The Bastion is fracturing," Jax reported on Day Seven. "Voss has maybe eight hundred loyalists left. Everyone else either defected to us or formed independent Safe Zones."

"And Maya?"

"Still in the medical wing. Treating Voss's people." Jax's jaw tightened. "She chose to stay, even after the defections. Says she won't leave patients behind."

That was Maya. Stubborn, principled, infuriating. And right.

---

Ethan cleared four dungeons in seven days, each harder than the last.

Day Eight: A Level 8 dungeon in a parking garage. Three floors, Rift Hounds and a new enemy — Shadow Stalkers, creatures that phased through walls and attacked from blind spots. Ethan's ERROR panel mapped their phasing patterns, predicting where they'd emerge. Clean sweep. Level 9.

Day Ten: A Level 10 dungeon in a hospital. Horrifying — Blight Rats the size of wolves, nesting in the morgue. Maya's Resonance Ring healed him remotely whenever his HP dipped below thirty percent, a connection that somehow persisted despite the distance. Level 10.

Day Twelve: A twin dungeon — two portals connected to the same boss room. Ethan cleared one side while Diana and Sparks cleared the other. They met in the middle, converging on a Rift Beast called a Hollow Warden — Level 12, humanoid, wielding corrupted System energy like a weapon.

His ERROR panel revealed the trick: the Warden's power source was the second portal. Seal it, and the Warden lost half its HP.

"Sparks — hit the portal with everything you've got!"

The teenager unleashed a torrent of electricity into the shimmering gate. It crackled, flickered, collapsed. The Hollow Warden staggered — its HP bar draining by forty percent in an instant. Diana's Guardian shield slammed into it while Ethan drove the Fracture Blade into its core.

``` [HOLLOW WARDEN DEFEATED] XP: +380 LEVEL UP! → Level 11 NEW SKILL: [CODE SIGHT — RANK 1] → See System vulnerabilities in environment → Detect hidden paths, traps, and weak points → Passive: +20% loot quality from exploited sources ```

Code Sight. The ability to see the System's structural weaknesses — not just in monsters, but in the world itself. Cracks in reality. Hidden doors. Traps that could be turned against their creators.

---

Day Fourteen. Level 11.

Ethan sat in the community center, examining the System Fragment's absence in his inventory. He'd used it to create the permanent Safe Zone — consumed it. But its effects lingered. The Safe Zone was proof of concept: the System could be modified. Permanently. By someone with the right access.

His ERROR interface had evolved alongside his level. At Level 11, he could see things he couldn't before — data streams flowing through the air like invisible rivers, System nodes pulsing at intersections, dungeon portals breathing with lifecycle energy.

And something else. Something new.

Behind the normal System overlay, deeper, older — a secondary architecture. Like finding ancient plumbing beneath a modern building. The thing the System Fragment had been broadcasting to. The foundation.

He focused. His vision shifted — ERROR's analytic mode, peeling back layers of reality like paint.

There.

Beneath the System's orderly grid of Classes and dungeons and Safe Zones, a different pattern emerged — organic, chaotic, beautiful. Not a grid but a web. Not designed but grown. Like roots of an ancient tree, winding through the fabric of reality across dimensions.

And woven into that web — forty-seven scars. Points of rupture where the System had deployed Enforcers, killed ERROR users, and burned out the foundation's natural defenses.

Earth wasn't just another world to integrate. It was a node in a network. And the System was a parasite on that network — using its energy to fuel the integration process.

"Jax." Ethan's voice was quiet. "I need you to look at something."

He described what he saw. Jax listened, typing furiously, cross-referencing with his own intercepted data.

"The foundation," Jax murmured. "I've seen traces of it in the System's deepest logs. They call it the Lattice. Pre-System infrastructure. It's... ancient. Way older than the System itself."

"The System is built on top of it."

"Like a mall built on top of Roman ruins. The System uses the Lattice's energy to power its operations — Class assignments, dungeon formation, monster spawning. All of it runs on stolen Lattice energy."

"And ERROR users can see the Lattice."

"Which is why the System kills them." Jax looked up. "You're not a bug, Ethan. You're an immune response. The Lattice is fighting back — ERROR is its weapon."

The realization settled over Ethan like cold water.

He wasn't a glitch. He was designed. Deliberately. By something older and deeper than the System itself — a cosmic foundation that was trying to fight off a parasite and kept producing antibodies.

Forty-seven antibodies, all killed before they could do their job.

He would be the forty-eighth. Or the first to succeed.

---

His ERROR interface pulsed with the clarity of new understanding:

``` ETHAN COLE — STATUS UPDATE LEVEL: 11 CLASS: ERROR (Lattice-Origin) SKILLS: → EXPLOIT WINDOW [RANK 3] → CODE SIGHT [RANK 1] → ANOMALY SCAN (passive) → LATTICE AWARENESS (NEW — passive) "You can now perceive the Lattice beneath the System. This changes everything." CORRECTION PROBABILITY: 32.4% ARBITER STATUS: CATALOGING (78% COMPLETE) ESTIMATED ENFORCER DEPLOYMENT: Level 15-18 ```

Level 15 to 18. That was when the Arbiter would finish cataloging and switch from observation to action.

He had maybe ten levels of breathing room.

"We need to move faster," Ethan said. "More dungeons. Higher levels. And I need to reach the Nexus."

"The Nexus?" Jax's eyebrows shot up. "That's a Level 20-plus super dungeon. It's where the System's local core lives."

"It's also where the Lattice connection is strongest. If I can reach the Nexus, I can interface with the Lattice directly. Maybe find out what ERROR is really supposed to do."

"Or die trying. Again. For the forty-eighth time."

Ethan smiled. It was a grim smile, edged with steel.

"Forty-eight's my lucky number."